Scissor blade and tool bit assembly

Abstract

The technical scheme belongs to the technical field, and particularly relates to a shear blade and a tool bit assembly, the shear blade comprises a main body part and two insertion arms, the insertion arms are formed on the end sides in the insertion direction of the main body part, and an embedding groove is formed between the two insertion arms; wherein a locking hole is formed in the main body part; or the main body part is matched with the two insertion arms to form a locking groove; the cross section of the locking groove is a circular arc, and the degree of the circular arc is larger than 180 degrees. The tool bit assembly comprises a first shear blade, a second shear blade and a third shear blade, the second scissor blade is detachably arranged on the first scissor blade through a locking piece; the locking piece is arranged in the direction perpendicular to the second shear blade and can move in the direction. The locking piece is provided with a first position and a second position in the moving direction; a locking part is arranged on the locking piece; the driving piece is provided with an embedding part, and the embedding part is clamped with the insertion end of the second shear blade and is in transmission with the insertion end of the second shear blade; and the fixing piece is used for pressing the driving piece and the second shear blade on the first shear blade.

Description

Technical Field

[0001] This technical solution relates to the field of electric scissors technology, specifically to a scissor blade and a blade assembly. Background Technology

[0002] Most commonly used scissors have a fixed cutting structure. However, in practical applications, such as in gardening, when cutting thin branches, thick branches, or shaping, scissors of different specifications or with different cutting blades are needed. Usually, multiple scissors of different specifications need to be configured, and once the scissors are damaged, the whole set needs to be replaced, resulting in high usage costs.

[0003] Chinese patent CN220875170U discloses a pair of scissors with interchangeable blades. Due to the complex structure of the cutting components of this pair of scissors, the blade replacement operation is difficult. When using the scissors, people often need to spend a lot of time replacing the blades. Therefore, there is an urgent need for a pair of scissors with quick and easy blade replacement. Summary of the Invention

[0004] The purpose of this technical solution is to provide a scissor blade and a blade assembly. Through the specific structure of the scissor blade, it can be quickly installed and disassembled. The specific structure includes, but is not limited to, the structure of the fitting groove, the locking hole and the locking groove. The movement of the locking part realizes the disassembly of the scissor blade. The movement of the locking part can be completed by pressing with the hand, without the need for special tools. It can also effectively avoid one-handed operation and the other hand being accidentally put into the blade. It solves the problem of the complex structure of the original interchangeable blade scissors.

[0005] The purpose of this technical solution is achieved as follows:

[0006] A scissor blade, used as a detachable blade of scissors, includes: a main body having a second cutting edge; two insert arms formed on the end side along the insertion direction of the main body, with a fitting groove formed between the two insert arms; wherein, a locking hole is provided on the main body; or the main body and the two insert arms cooperate to form a locking groove; the cross-section of the locking groove is an arc, the degree of which is greater than 180 degrees.

[0007] Preferably, each of the insert arms has a guide slope on its end side.

[0008] A blade assembly includes: a main blade fixedly disposed within a housing and having a first cutting edge; a scissor blade detachably disposed on the main blade via a locking member; the locking member being disposed along a direction perpendicular to the scissor blade and movable in that direction; the locking member having a first position and a second position in the direction of movement; the locking member having a locking portion; when the locking member is in the first position, the locking portion is located within a locking groove of the scissor blade, and the scissor blade rotates around the locking portion; when the locking member is in the second position, the locking portion disengages from the locking groove of the scissor blade, and the scissor blade can be removed; a driving member having a front end rotatably disposed on the locking member and a rear end gear connected to the transmission assembly; a fitting portion being disposed on one side of the driving member, the fitting portion engaging with and transmitting power to the fitting groove of the scissor blade; and a fixing member for pressing the driving member and the scissor blade onto the main blade.

[0009] Preferably, the cutter head assembly further includes a return spring, with its upper end abutting against the locking member and its lower end abutting against the inner wall of the housing, so that the locking member always has a tendency to move from the second position to the first position.

[0010] Preferably, the main blade has a locking hole one, the drive component has a locking hole two, and the fixing component has a locking hole three; the locking component can pass through the locking hole one, the locking groove, the locking hole two, and the locking hole three sequentially from bottom to top and be engaged with the main blade.

[0011] Preferably, the lower peripheral side of the locking member has a protruding limiting part, which movably abuts against the lower end face of the main blade.

[0012] Preferably, a limiting post protrudes from the lower end surface of the driving component; the rear end of the scissor blade moves to abut against the limiting post.

[0013] Preferably, the rear end of the drive component is formed with gear teeth, which are used to receive power provided by the transmission assembly.

[0014] Preferably, both ends of the fastener are detachably mounted on the main blade or housing by screws.

[0015] Preferably, the electric scissors also include a switch, which is disposed on the upper end face of the locking member.

[0016] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0017] 1. The insert arm of the scissor blade designed in this technical solution can not only guide the insertion of the scissor blade, but also cooperate to form a fitting groove to realize the cooperation with an external power source, thereby realizing the transmission of the scissor blade, while the locking hole or locking groove can realize the replacement of the scissor blade.

[0018] 2. The design of this technical solution features a separate design for the scissor blade and the main blade. The scissor blade is detachably mounted on the main blade, and the locking component is inserted through the main blade in a direction perpendicular to the scissor blade. When the locking component is in different positions, it can lock or remove the scissor blade in conjunction with the scissor blade. The locking component has a simple structure, and the scissor blade can be quickly disassembled and replaced by personnel controlling the movement of the locking component.

[0019] 3. The reset spring designed in this technical solution can push the locking part upward until the locking part enters the locking groove, thereby realizing the locking of the second moving blade. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the scissor blades.

[0021] Figure 2 This is a schematic diagram of the cutter head assembly.

[0022] Figure 3 This is an exploded view of the cutter head assembly.

[0023] Figure 4 This is a cross-sectional view of the cutter head assembly.

[0024] Figure 5 This is a schematic diagram of the structure when the locking element is in the first position.

[0025] Figure 6 This is a schematic diagram of the structure when the locking element is in the second position.

[0026] Figure 7 This is a schematic diagram of the structure when the drive component and the shear blade are in operation.

[0027] Reference numerals: 100, main body; 101, insert arm; 102, fitting groove; 103, guide slope; 2, main blade; 3, scissor blade; 4, locking component; 5, driving component; 6, fixing component; 7, locking groove; 8, locking part; 81, first part; 82, second part; 9, locking hole one; 10, locking hole two; 11, locking hole three; 13, fitting part; 14, gear tooth; 15, screw; 17, limiting post; 18, limiting part; 19, switch component; 20, washer; 21, return spring. Detailed Implementation

[0028] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1As shown, the scissor blade 3 protected in this application is one of the parts of the scissors, specifically one blade of the scissors. It is detachably mounted on the scissor body and can be driven by external power to cooperate with the other blade to complete the cutting work. It includes a main body 100 and insert arms 101. The edge of the main body 100 has a second cutting edge. The two insert arms 101 are formed on the end side along the insertion direction of the main body 100. A fitting groove 102 is formed between the two insert arms 101. When the scissor blade 3 is installed, after the two insert arms 101 are inserted into the scissors, the fitting part 13 of the scissors will be placed in the fitting groove 102 formed between the two insert arms 101 and locked together. When the fitting part 13 is rotated in a controlled manner, the scissor blade 3 will naturally rotate accordingly.

[0030] Furthermore, the main body 100 is provided with a locking hole, or the main body 100 and the two insert arms 101 cooperate to form a locking groove 7. The locking hole or locking groove 7 is designed to achieve the snap-fit ​​of the scissor blade 3. The locking hole and the fitting groove 102 are independent of each other, while the locking groove 7 and the fitting groove 102 are interconnected. Figure 1 The structure of the locking groove 7 is shown. The locking groove 7 can be used with the locking part 4 of the scissors to lock the scissor blade 3. The cross-section of the locking groove 7 is an arc with an arc degree greater than 180 degrees.

[0031] like Figure 2-7 As shown, a blade assembly for performing cutting operations includes a first blade, a shear blade 3, a locking member 4, a driving member 5, and a fixing member 6. The rear end of the main blade 2 is fixedly disposed within a housing, and the front end has a first cutting edge. The rear end of the shear blade 3 is detachably disposed on the main blade 2 via the locking member 4, and the front end has a second cutting edge. The locking member 4 is inserted into the main blade 2 in a direction perpendicular to the shear blade 3 and can move in that direction. The locking member 4 can fix the shear blade 3 in the horizontal direction by changing its own position. The locking member 4 has a first position and a second position in the moving direction, locking... The component 4 is provided with a locking part 8. When the locking part 4 is in the first position, the locking part 8 is located in the locking groove 7 of the scissor blade 3. At this time, the scissor blade 3 can rotate around the locking part 8. When the locking part 4 is in the second position, the locking part 8 disengages from the locking groove 7 of the scissor blade 3. At this time, the scissor blade 3 can be moved horizontally out. The front end of the drive component 5 is rotatably mounted on the locking part 4, and the rear end gear is connected to the transmission assembly. A fitting part 13 is provided on one side of the drive component 5. The fitting part 13 engages with the fitting groove 102 of the scissor blade 3 and drives the drive component 6. The fixing part 6 is used to press the drive component 5 and the scissor blade 3 onto the main blade 2.

[0032] Furthermore, such as Figure 1 and Figure 7As shown, the fitting part 13 is a rectangular block, and the fitting groove 102 of the scissor blade 3 has an opening. When the scissor blade 3 is installed, the fitting part 13 is placed in the opening and fits into the fitting groove 102 of the scissor blade 3. At this time, the driving member 5 can engage with the scissor blade 3 through the insert and drive it. When installing the scissor blade 3, you only need to pay attention to the orientation of the scissor blade 3 when disassembling it, and you can smoothly reinstall the scissor blade 3 back to its original position without the second scissor part colliding with the fitting part 13.

[0033] like Figure 2-4 As shown, the cutter head assembly also includes a return spring 21. The upper end of the return spring 21 abuts against the lower end of the locking member 4, and the lower end abuts against the inner wall of the housing. This is used to ensure that the locking member 4 always has a tendency to move from the second position to the first position. The lower end of the locking member 4 is provided with a mounting part. The return spring 21 is sleeved outside the mounting part to ensure the stability of the return spring 21 when it moves.

[0034] like Figure 4 and Figure 5 As shown, the main blade 2 has a locking hole 9, the drive component 5 has a locking hole 10, and the fixing component 6 has a locking hole 11. When the locking component 4 is installed, it can pass through the locking hole 9, the locking groove 7, the locking hole 10, and the locking hole 11 from bottom to top and be engaged with the main blade 2. The lower circumferential side of the locking component 4 has a protruding limiting part 18. The limiting part 18 moves against the lower end face of the main blade 2 and can limit the maximum upward movement distance of the locking component 4.

[0035] Furthermore, the locking member 4 is stepped, with a first part 81, a second part 82, a locking part 8, and a limiting part 18 whose inner diameters increase sequentially on its periphery. The first part 81 mates with the third locking hole 11, which needs to be inserted into and protrude from the fixing member 6. The second part 82 mates with the second locking hole 10. When the driving member 5 rotates, it is centered on the second part 82. The locking part 8 mates with the locking groove 7, which has a narrow opening. The length of the narrow opening is less than the inner diameter of the locking part 8, so that the scissor blade 3 can be engaged with the locking part 8.

[0036] like Figure 1 and Figure 7 As shown, the rear end of the scissor blade 3 has a guide slope 103, which can guide the scissor blade 3 to smoothly insert horizontally inward. A limit post 17 is provided on the lower end surface of the drive component 5. The rear end of the scissor blade 3 moves to abut against the limit post 17, which can limit the farthest distance that the scissor blade 3 can be inserted inward.

[0037] Furthermore, the rear end of the drive component 5 is formed with gear teeth 14. The drive component 5 is connected to the transmission component gear through the gear teeth 14 to receive the power provided by the transmission component. The two ends of the fixing component 6 are detachably mounted on the main blade 2 or the housing by screws 15.

[0038] Furthermore, the electric scissors also include a switch 19, which is located on the upper surface of the locking member 4. By pressing the switch 19, the operator can switch the locking member 4 between the first and second positions. The switch 19 has a large contact area with the operator's hand, making it convenient for the operator to control the lifting and lowering of the locking member 4. The electric scissors also include a gasket 20, which is located between the fixing member 6 and the driving member 5. The gasket 20 can effectively reduce the wear between the fixing member 6 and the driving member 5, thereby increasing the service life of the scissors.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A scissor blade, used as a detachable blade of scissors, characterized in that, include: The main body (100) has a second cutting edge at its edge; Two insert arms (101) are formed on the end side along the insertion direction of the main body (100), and a fitting groove (102) is formed between the two insert arms (101); The main body (100) is provided with a locking hole; or The main body (100) and the two insert arms (101) cooperate to form a locking groove (7); The cross-section of the locking groove (7) is an arc, and the degree of the arc is greater than 180 degrees.

2. The scissor blade according to claim 1, characterized in that: Each of the insert arms (101) has a guide slope (103) on its end side.

3. A blade assembly, characterized in that, include: The main blade (2) is fixedly installed inside the housing and has a first cutting edge. A scissor blade (3) as described in claim 1 or 2, which is detachably mounted on the main blade (2) by means of a locking member (4); The locking member (4) is arranged in a direction perpendicular to the scissor blade (3) and can move in that direction; the locking member (4) has a first position and a second position in the moving direction; the locking member (4) is provided with a locking part (8); When the locking member (4) is in the first position, the locking part (8) is located in the locking groove (7) of the scissor blade (3), and the scissor blade (3) rotates around the locking part (8); When the locking member (4) is in the second position, the locking part (8) disengages from the locking groove (7) of the scissor blade (3), and the scissor blade (3) can be removed; The driving component (5) has its front end rotatably mounted on the locking component (4), and its rear end gear is connected to an external power source; a fitting part (13) is provided on one side of the driving component (5), and the fitting part (13) engages with the fitting groove (102) of the scissor blade (3) and drives it. The fastener (6) is used to press the drive (5) and the shear blade (3) onto the main blade (2).

4. A cutter head assembly according to claim 3, characterized in that, include: The cutter head assembly also includes a return spring (21), the upper end of which abuts against the locking member (4) and the lower end of which abuts against the inner wall of the housing, so that the locking member (4) always has a tendency to move from the second position to the first position.

5. A cutter head assembly according to claim 4, characterized in that: The main blade (2) has a locking hole 1 (9), the drive member (5) has a locking hole 2 (10), and the fixing member (6) has a locking hole 3 (11). The locking member (4) can pass through the locking hole one (9), locking groove (7), locking hole two (10) and locking hole three (11) from bottom to top and be snapped onto the main blade (2).

6. A cutter head assembly according to claim 5, characterized in that: The locking member (4) has a limiting part (18) protruding from its lower periphery, and the limiting part (18) movably abuts against the lower end face of the main blade (2).

7. A cutter head assembly according to claim 6, characterized in that: The driving component (5) has a limit post (17) protruding from its lower end surface; The rear end of the scissor blade (3) moves to abut against the limiting post (17).

8. A cutter head assembly according to claim 7, characterized in that: The drive component (5) has teeth (14) formed at its rear end, and the teeth (14) are used to receive power provided by the transmission assembly.

9. A cutter head assembly according to claim 8, characterized in that: The two ends of the fastener (6) are detachably mounted on the main blade (2) by screws (15).

10. A cutter head assembly according to claim 9, characterized in that: It also includes a switch (19), which is disposed on the upper end face of the locking member (4).

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